package com.freeze;


import cn.hutool.json.JSONUtil;
import com.freeze.util.Base64Util;
import com.freeze.util.FileUtil;
import com.freeze.util.HttpUtil;
import com.freeze.vo.TableResult;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

/**
 * @author he_jiebing@jiuyv.com
 * @create 2024-07-01 16:31
 */
public class TestTablePdf {
    public static final String APP_ID = "88723071";
    public static final String API_KEY = "JWlcJTEGtOWv87GgNPYCoMWg";
    public static final String SECRET_KEY = "T3y3Oh2Krp3dvDvvbfBV9UoXjR4up6h4";
    /**
     * 重要提示代码中所需工具类
     * FileUtil,Base64Util,HttpUtil,GsonUtils请从
     * https://ai.baidu.com/file/658A35ABAB2D404FBF903F64D47C1F72
     * https://ai.baidu.com/file/C8D81F3301E24D2892968F09AE1AD6E2
     * https://ai.baidu.com/file/544D677F5D4E4F17B4122FBD60DB82B3
     * https://ai.baidu.com/file/470B3ACCA3FE43788B5A963BF0B625F3
     * 下载
     */
    public static String table() {
        // 请求url
        String url = "https://aip.baidubce.com/rest/2.0/ocr/v1/table";
        try {
            // 本地文件路径
            String filePath = "D:\\1\\test-ocr\\test-ocr-0629\\src\\main\\resources\\pdf\\2021-D-18930FinalReport_1.pdf";
            byte[] imgData = FileUtil.readFileByBytes(filePath);
            String imgStr = Base64Util.encode(imgData);
            String imgParam = URLEncoder.encode(imgStr, "UTF-8");

            String param = "pdf_file=" + imgParam;

            // 注意这里仅为了简化编码每一次请求都去获取access_token，线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
            //String accessToken = "[调用鉴权接口获取的token]";
            String accessToken = getAuth();
            String result = HttpUtil.post(url, accessToken, param);
            //System.out.println(result);

            System.out.println(countTable(result));


            return result;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String countTable(String result){
        TableResult tableResult = JSONUtil.toBean(result, TableResult.class);
        int pdfFileSize = tableResult.getPdf_file_size();
        int tableNum = tableResult.getTable_num();
        List firstPageList = tableResult.getTables_result();

        // 请求url
        String url = "https://aip.baidubce.com/rest/2.0/ocr/v1/table";
        for(int i=2;i<=pdfFileSize;i++){
            try {
                // 本地文件路径
                String filePath = "D:\\1\\test-ocr\\test-ocr-0629\\src\\main\\resources\\pdf\\2021-D-18930FinalReport_1.pdf";
                byte[] imgData = FileUtil.readFileByBytes(filePath);
                String imgStr = Base64Util.encode(imgData);
                String imgParam = URLEncoder.encode(imgStr, "UTF-8");

                String param = "pdf_file=" + imgParam+"&pdf_file_num="+i;

                // 注意这里仅为了简化编码每一次请求都去获取access_token，线上环境access_token有过期时间， 客户端可自行缓存，过期后重新获取。
                //String accessToken = "[调用鉴权接口获取的token]";
                String accessToken = getAuth();
                String result2 = HttpUtil.post(url, accessToken, param);
                //System.out.println(result);
                TableResult tableResult2 = JSONUtil.toBean(result2, TableResult.class);
                tableNum += tableResult2.getTable_num();
                firstPageList.addAll(tableResult2.getTables_result());


            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        //tablesResult.get
        TableResult newResult = new TableResult();
        newResult.setTables_result(firstPageList);
        newResult.setTable_num(tableNum);
        newResult.setPdf_file_size(pdfFileSize);
        String s = JSONUtil.toJsonStr(newResult);

        return s;
    }
    /**
     * 获取权限token
     * @return 返回示例：
     * {
     * "access_token": "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567",
     * "expires_in": 2592000
     * }
     */
    public static String getAuth() {
        // 官网获取的 API Key 更新为你注册的
        String clientId = API_KEY;
        // 官网获取的 Secret Key 更新为你注册的
        String clientSecret = SECRET_KEY;
        return getAuth(clientId, clientSecret);
    }

    /**
     * 获取API访问token
     * 该token有一定的有效期，需要自行管理，当失效时需重新获取.
     * @param ak - 百度云官网获取的 API Key
     * @param sk - 百度云官网获取的 Securet Key
     * @return assess_token 示例：
     * "24.460da4889caad24cccdb1fea17221975.2592000.1491995545.282335-1234567"
     */
    public static String getAuth(String ak, String sk) {
        // 获取token地址
        String authHost = "https://aip.baidubce.com/oauth/2.0/token?";
        String getAccessTokenUrl = authHost
                // 1. grant_type为固定参数
                + "grant_type=client_credentials"
                // 2. 官网获取的 API Key
                + "&client_id=" + ak
                // 3. 官网获取的 Secret Key
                + "&client_secret=" + sk;
        try {
            URL realUrl = new URL(getAccessTokenUrl);
            // 打开和URL之间的连接
            HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection();
            connection.setRequestMethod("GET");
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.err.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String result = "";
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
            /**
             * 返回结果示例
             */
            System.err.println("result:" + result);
            JSONObject jsonObject = new JSONObject(result);
            String access_token = jsonObject.getString("access_token");
            return access_token;
        } catch (Exception e) {
            System.err.printf("获取token失败！");
            e.printStackTrace(System.err);
        }
        return null;
    }

    public static void main(String[] args) {
        table();
    }
}
